My test is even easier - I rarely remember dreaming. It's very similar to just blacking out. I lay down, fall asleep, and then 6-7 hours have gone by and I'm being awoken by my alarm clock. I sometimes remember parts of a particularly disturbing dream but they don't have any detail after I wake up, and within hours it is almost completely gone. In these cases it may feel like a half hour or so has passed.

I had a dream of that type a few days ago, and other than the impression that it was disturbing I can't remember a single thing about it. Nothing.

Stuff that happens when I'm awake, though, I remember very well.